\begin{enumerate}
  \item This is a very long sentence, which is mostly likely going to be longer
        than eighty characters---and it is.
  \item This is a very long sentence, which is mostly likely going to be longer
        than eighty characters---in fact, it is. But it's wrapped on one
        hundred characters, yes 100.
\end{enumerate}
----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|----|
   5   10   15   20   25   30   35   40   45   50   55   60   65   70   75   80   85   90